摘要
通过精细有限元模型模拟了箱形截面钢柱在不同轴压作用下承受水平循环荷载下的滞回性能。以加载角度0°,15°,30°,45°及轴压比0.2和0.4为参数共进行了8组试验模拟。模拟结果表明:加载角度虽然对最大承载力无较大影响,但会由于截面转角对局部破坏的限制作用而提高模型的耗能能力及延性;轴压比由0.2提高到0.4时,会降低模型的最大承载力、耗能能力和延性。
Finite element analysis was used to study the effects of axial compression on hysteretic behavior of RHScolumns. Eight specimens were analyzed with different parameters of load angle（0°,15°,30°,45°） and axial force ratio（0. 2 and 0. 4）. The results obtained from these comprehensive numerical analysis indicated that loading direction had limited effect on the ultimate strength,but significantly decreased the ductility and energy absorption capacity. With the increase of axial force ratio from 0. 2 to 0. 4,the ultimate strength,ductility and energy-dissipating capacity would decreased.
作者
周重阳
崔瑶
Zhou Chongyang CuiYao(State key laboratory of coastal and offshore engineering, Dalian University of Technology, Dalian 116024, China)
出处
《钢结构》
北大核心
2017年第1期36-39,82,共5页
Steel Construction
基金
国家自然科学基金(51208076)
中央高校基本科研业务费专项课题(DUT14LK04)
关键词
箱形截面钢柱
水平循环加载
加载路径
轴压比
滞回性能
RHS-column
horizontal cyclic loading
loading paths
axial force ratio
hysteretic behavior
